Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom & Geometric Windows Across Three Lakes
Custom and geometric windows in Three Lakes run $2,500 to $5,000 per opening installed for large or shaped units, while standard-size impact windows land between $800 and $1,500 each. Every replacement window here has to carry a Miami-Dade Notice of Acceptance (NOA) before it can legally go into the opening. That’s not optional, and it’s not something big-box installers from outside the county always know to check. Call our Three Lakes window team at (850) 930-1813 for a free in-home measure and a written quote that accounts for HVHZ compliance from day one.
We’ve built and installed custom geometric windows along Cutler Ridge Drive, through the neighborhoods off Old Cutler Road, and across the pockets of Three Lakes where post-Andrew rebuilds dominate the streetscape. The window in a half-moon gable or a trapezoid bump-out isn’t a stock item. It’s an engineered opening, and in Three Lakes it has to hold up to 175 mph design wind speeds with salt air chewing at the frame every single season.
Why Winslow Windows & Doors Is Three Lakes’s Preferred Custom & Geometric Windows Company
Ed Winslow started this company in 2011, and his name is still on the door and on every job we do. We’re the local owner-operated alternative to the faceless chains that send a rotating cast of subcontractors to your house. When a Three Lakes homeowner calls us about a fogged arched window or a non-compliant jalousie replacement, they talk to a person who knows exactly which Miami-Dade inspection stops the job until it’s scheduled. That local knowledge isn’t a talking point. It’s the difference between a three-day install and a three-week one.
Our technicians are background-checked and uniformed, so you know who’s pulling into your driveway before the truck parks. Every call is answered by a live person, 24/7. No voicemail loops, no call centers. If you’re on SW 200th Street or near Three Lakes Park and you need to know whether your current window has a valid NOA, pick up the phone and ask. We’ll tell you what we know before we ever schedule a visit.
We also stand behind the work with the Done Right Promise. If it’s not done right, we make it right. That’s a standard of accountability written into every job.
Our Custom & Geometric Windows Services in Three Lakes
Custom Impact Windows
Three Lakes sits inside Miami-Dade County’s High Velocity Hurricane Zone (HVHZ), one of only two counties in the entire United States with that designation. Every Custom Impact Window we fabricate for a Three Lakes home carries a Miami-Dade NOA specific to its size, shape, and glazing make-up. We specify laminated impact glass with a large-missile rating on every opening, and we verify the NOA against the exact frame and glass configuration before anything is ordered. A window that meets Florida Building Code in Broward or Monroe may not pass in Three Lakes. We don’t sell those windows.

Geometric & Shaped Windows
Triangles, trapezoids, pentagons, circles, half-rounds. Three Lakes has plenty of homes built in the 1970s and 1980s with custom geometric lites over entry doors and in stairwells. Some still have original jalousie or louvered aluminum frames in those shapes, and those windows have no Miami-Dade NOA at all. They’re non-compliant, they can’t earn wind mitigation credits, and they leak air and water through corroded aluminum channels. We engineer replacements that match the rough opening and carry current HVHZ product approval.

Arched & Curved Windows
Arched window replacement in Three Lakes is a specialty, not an afterthought. The post-Andrew rebuilds from the early-to-mid 1990s used early-generation laminated impact glass in arched and radius openings. Thirty years of UV exposure breaks down the interlayer, and we now see delamination and fogging in those units at high rates across Three Lakes. We remove the failed arch, verify the rough opening, and install a new thermally broken aluminum or vinyl frame with current large-missile impact glazing. The NOA has to match the arc geometry exactly. Off Cutler Ridge Drive, our crew replaced a 1994 post-Andrew arched window with a laminated glass interlayer that had delaminated and fogged. The original aluminum jamb showed heavy salt-air oxidation, and the Miami-Dade NOA for the replacement required a large-missile rating before we could even install the new impact-rated glazing.

Oversized Openings
Floor-to-ceiling window walls, corner glass, and picture windows wider than eight feet all fall under oversized openings. In Three Lakes, design wind pressures on large glazing areas demand stronger frames, thicker glass, and more robust fastening patterns than smaller windows in the same wall. Miami-Dade’s building department also mandates a rough-opening inspection before any trim goes on. We schedule that inspection in advance on every oversized job, because crews who don’t wait days for an inspector with the opening exposed to weather. Out-of-county installers get caught by this constantly.
Our full Custom & Geometric Windows team handles every phase: measure, NOA verification, fabrication, structural fastening, inspection coordination, and finishing. We work in Three Lakes weekly and know what the inspectors here flag on every job.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Three Lakes
We’re an authorized installer for eight premium brands, and for Three Lakes custom work we lean most often on ECO Window Systems, Mr-Glass. These manufacturers offer the geometric and radius shapes we need for Three Lakes homes, and each provides Miami-Dade NOA documentation on their impact configurations. We keep local parts inventory for Three Lakes service calls, so seal replacements, hardware swaps, and re-glazing on existing units happen faster than ordering from a warehouse in Central Florida. If you already have a PGT or CGI window with a failed seal, we can service that too. Our brand coverage means one phone call covers nearly every window on your house.
Common Custom & Geometric Windows Problems We See in Three Lakes Homes
- Delaminated impact glass in 1990s arches and radius windows. The post-Andrew generation of laminated glass is now 30+ years old, and the interlayer breaks down under Three Lakes’s intense UV load. The window fogs from the inside, and the Florida Product Approval warranty doesn’t cover age-related delamination.
- Salt-air oxidation on aluminum jambs and thresholds. Biscayne Bay is a few miles east, and the salt air inland from it accelerates corrosion on bare and anodized aluminum. We see frames near SW 130th Avenue and along Old Cutler Road with pitting so deep the structural fastening pattern can’t hold design pressure anymore.
- Pre-Andrew jalousie and louvered windows in geometric shapes. These were common in Three Lakes homes built in the 1960s and 1970s. They have no Miami-Dade NOA, they don’t seal against wind-driven rain, and they can’t qualify the house for windstorm insurance credits. Replacement requires full frame-and-all opening reconstruction, not a sash swap.
- Failed seals on custom trapezoid and pentagon windows over doors and stairwells. These odd shapes take more thermal movement than rectangular lites, and the vinyl glazing seals break down faster in Miami-Dade’s constant humidity. Fog between the panes is the tell-tale sign.
Pricing for Custom & Geometric Windows in Three Lakes, FL
A standard-size impact single-hung in Three Lakes typically runs $900 to $1,800 installed. Large or custom-shaped openings, like a half-round over a double entry door or a trapezoid gable window, land between $2,500 and $5,000 each. Whole-home packages on the 1960s-1980s ranches common throughout Three Lakes start around $8,000 and go north of $25,000 depending on opening count and frame material. The big price drivers here are HVHZ compliance, large-missile versus small-missile glazing, and whether the rough opening needs structural repair from salt corrosion. A standard vinyl frame costs less than thermally broken aluminum, but aluminum handles the humidity and wind load better long-term. Call (850) 930-1813 to schedule a free in-home measure and get a written line-item quote. No trip charge inside our home county.
What Custom & Geometric Windows Costs in Three Lakes
Get a few numbers in your head before you call around. Impact windows in Three Lakes generally run $800 to $1,500 per window installed. Impact single-hungs sit at $900 to $1,800. Large or custom openings, the arches and pentagons and oversized picture windows, run $2,500 to $5,000 each. Whole-home packages fall between $8,000 and $25,000 or more. What moves the price in Three Lakes specifically: opening count, floor height (second-story installs cost more for access and bracing), whether the unit needs large-missile glazing (nearly all of southern Miami-Dade does), and frame material. We give you a free in-home measure and a written quote before any work starts. That quote is fixed. No change orders when the inspector asks for a different fastening pattern.
One comparison worth thinking through: impact windows versus hurricane shutters. Shutters cost less up front, but someone has to put them up before every storm and take them down after. Impact glass is permanent protection. You lock the door and you’re done. In Three Lakes, where the HVHZ designation means every storm season matters, most homeowners we talk to choose the permanent route.
Florida Pays You Back
Florida offsets some of the cost of impact windows and doors. The My Safe Florida Home program offers matching grants up to $10,000 for qualifying wind-mitigation upgrades, and Three Lakes homeowners often qualify. Florida also exempts impact-resistant windows and doors from sales tax. On the federal side, the 25C energy credit covers 30% of product cost up to $600 per year on qualifying energy-efficient units. After installation, a wind-mitigation inspection (usually $75 to $150) can open the door to windstorm premium credits averaging around 25% on the windstorm portion of your policy. We don’t set the program rules or your insurance carrier’s rates, so we won’t promise a specific dollar figure. We’ll tell you what’s available and point you to the right paperwork.
We Also Serve Cities Near Three Lakes
Our crews work throughout Custom & Geometric Windows in Three Lakes and the surrounding communities. If you’re in South Miami, Miami, Hialeah, or Doral, we can handle your custom window work with the same Miami-Dade NOA expertise and the same Done Right Promise. Dispatch and scheduling are coordinated from our Miami office, and crews serve Three Lakes locally. The one down the road.
Serving Three Lakes, FL - Our Local Coverage Area
We’re based in the Three Lakes area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Custom & Geometric Windows in Three Lakes
Yes. Three Lakes is inside the High Velocity Hurricane Zone, and Miami-Dade County requires a Notice of Acceptance for every replacement window and door, including arched and geometric shapes. The NOA must match the exact size, frame, and glazing configuration. A window approved for Broward or Monroe may not pass here. We verify the NOA before we order anything, so you don’t end up with a window you can’t legally install. Call (850) 930-1813 with your opening measurements and we’ll tell you what’s available.
That fog is delamination of the laminated glass interlayer. Three Lakes’s intense year-round UV exposure breaks down the plastic interlayer inside post-Andrew impact glass, usually after 25 to 30 years. The window still looks impact-rated from the outside, but the glazing is failing and the Florida Product Approval warranty doesn’t cover age-related delamination. The fix is full glazing replacement with a current NOA. We see this constantly off Old Cutler Road and throughout the 1990s rebuilds in Three Lakes.
Jalousie and louvered aluminum windows have no Miami-Dade NOA and don’t meet current HVHZ impact requirements. Replacing them with a custom geometric window is not only legal, it’s often required by your insurance carrier before they’ll offer windstorm credits. The replacement has to match the opening and carry current product approval for that shape and glazing. We handle the full frame-out and rebuild so the new window meets code and actually fits.
Miami-Dade mandates a rough-opening inspection before any trim goes on a replacement window or door. If that inspection isn’t scheduled in advance, you can wait days with an open hole in your wall. We build the inspection into the job schedule on every custom window project in Three Lakes, so the inspector arrives when the opening is ready and the job doesn’t stall. This is the single biggest scheduling trap out-of-county crews fall into when they work in Three Lakes.
Custom geometric impact windows with a valid Miami-Dade NOA can qualify for windstorm premium discounts, typically after a wind-mitigation inspection that runs $75 to $150. The average windstorm credit is around 25% on the windstorm portion of the premium, but your carrier sets the final number. We recommend the inspection after install so the paperwork reflects exactly what’s in your openings. Call (850) 930-1813 for an exact quote on your window project. Estimates are free.
The Materials Problem in Three Lakes
Salt air near Three Lakes decides the materials before we ever talk schedule. The air blowing inland from Biscayne Bay carries enough salt to pit standard aluminum window frames within a decade. We see it on 1990s arches where the jamb has oxidized so badly the screws that hold the frame to the rough opening are corroding from the inside out. The cheap spec, bare mill-finish aluminum with standard fasteners, fails early here. The frames pit, the fasteners weaken, and the whole unit loses its structural fastening pattern, the exact thing the Miami-Dade NOA was designed to protect. We specify thermally broken aluminum with a marine-grade finish and stainless or hot-dip galvanized hardware on every Three Lakes project. The coastal spec costs more up front. The inland spec costs more within ten years, because you’re replacing the window again and repairing the opening it damaged on the way out.
That’s the price gap in Three Lakes. A cheap vinyl window with bare steel hardware and no large-missile rating will quote lower. It won’t pass the rough-opening inspection, it won’t carry a Miami-Dade NOA, and it won’t survive the salt air. We’ve torn out enough failed windows in this neighborhood to know exactly how that story ends. You buy the window twice.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Three Lakes and Miami-Dade County since 2011.
Six Reasons Homeowners Choose Winslow Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.










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